Method of and means for preventing the sliding or skidding of vehicles



F. FUCHS METHOD OF AND MEANS FOR PREVENTING THE SLIDING OR SKIDDING OF VEHICLES Filed Jan. 4, 1950 l/vvs/v-roe, Fe/7 FUCHS ,4 TTOBA/EYS Patented Sept. 29, 1931 V UNITED STATES- PATENT OFFICE FRITZ FUCHS, VIENNA, AUSTRIA METHOD OF AND MEANS FOR PREVENTING THE SLIDING OB SKIDDING 0F VEHICLES Application filed January 4, 1980, 'Serial No. 418,528, and in Austria January 14, 1929.

. This invention relates to an improved "method of and means for preventing the sliding or skidding of vehicles.

The drive of mechanically driven vehicles running on rails, particularly in the event of tramcars, spreads sand onto the rails in order to prevent the sliding or skidding on a slippery track. In the event of motor vehicles which do not run on rails, for in:

stance motor-cars, the above method is not applicable and will also fail in the case of railways, because the rails rest above ground.

hesive substance and sand, to the running face of the wheel, for instance a rubber tyre. This is preferably carried out in such a manner and at such a place of the running face of the wheel that the slinging off of the mass by centrifugal force is prevented as far as possible.

-" For this object for instance a mixture of sand and solution of lue, remaining in the liquid state, or any 0t er sufiiciently adhering or sticking substance, for instance a syrupy solution vegetable gum or resinous solutions, may be employed. However instead of applying the substance in the shape of a mixture, the sand and the sticky mass may be applied separately to the run of the wheel. The frictional material, for instance sand, may be dispensed with if the sticky substance alone sufiiciently adheres to the wheels and the surface of the road. However this is not satisfactory in many cases.

' The device for carrying out the method according to the present invention comprises a receptacle for the mass provided with a discharge opening, and means for closing thelatter. The mass contained in the receptacle may be forced out of the opening,

which preferably is closed by a valve, by overpressure for instance air pressure and thus 'ap lied to the running face of the wheel. f desired themass may be sub jected to continuous pressure, for instance springor air pressure, and is discharged rotating wheel and is not thrown off by the centrifugal force of the wheel.

Three modes of carrying out the present invention are illustrated diagrammatically and by way of example in Fi s. 1, 2 and 3 of the; accompanying sheet 0 drawings.

The device for applying the means preventing the sliding or skidding of a vehicle consists of a receptacle 2, closed by a lid 1 and provided with a valve seat in its floor, on which is adapted to. rest a conical valve 3. The stem 4 of the latter freely passes through a tubular adjusting screw 4, screwed into the neck of the lid 1. The adjusting screw consists of a screw-threaded neck portion 5, an operating knob 3' fixed thereto and a pressure disc 5, which is attached .freely rotatable to the bottom end of said neck-portion 5. A piston or plate 7 rests on the sticking and friction-promoting substance 6 contained in the receptacle 2 and is subjected to the action of a compression spring 8, which is enclosed between the pressure disc 5 and the'piston 7. The valvestem 4 passes through and secures the piston 7 in its central position. If it is desired to apply the sticking and friction-promoting I substance for instance to the tyre of a motor vehicle, the valve 3 is lifted from the drivers seat either in mechanical, pneumatic, electric. hydraulic or'other suitable manner whereby the substance 6, which is continuously subjected to pressure by the spring-loaded piston 7, passes through the valve-seat and is applied to the tyre 9. The tension of the compression spring 8 is adjustableby means of the set-screw 5, 5 5.

The device shown in Fig. 2 consists of a receptacle 2, a flap-valve 3 hinged to the latter and loaded by a spring 10 and shut ting the discharge opening of the receptacle,

horizontally arranged receptacle 2 is pro- 2. Device for vided with a mouth-piece 2" throughwhich is discharged the sticking and friction-promoting substance 6-if the piston 7, operating in the receptacle 2, is moved forward by compressed air, which is introduced by way of the tubular extension 11 or in any other convenient manner. The mouth-piece 2 of the receptacle 2 is disposed in such a manner that the substance 6 can be applied at a place of the tyre where the tendency of the centrifugal force to throw off the substance is reduced to a minimum.

I claim: L I I 1. Method of preventing the sliding or skidding of vehicles provided with rubber tires which consists in applying under'pressure a plastic, adhering and friction-promotin substance to the running face of the ru ber tire. Y reventing the sliding or skidding of vehices comprising in combination a receptacle provided with a discharge opening-and containing an' adhering and friction-promoting substance, means for closing said discharge opening attached to the receptacle and means in connection with the latter subjecting said substance to continuous pressure.

3. Device for reventingthe sliding or skidding of vehic es comprlsln in combination a receptacle provided wit a discharge opening and containing an adhering and friction-promoting substance, means 7 for closing said discharge opening attached to the receptacle and means in connection with the latter subjecting said substance to pressure in case of opening said discharge opening.

In testimony whereof I afiix my signature. FRITZ FUCHS. 

